Wenjun Wang1, Juan Diego Sánchez Heredia2, Vitaliy Zhurbenko1, and Jan Henrik Ardenkjær Larsen2
1Department of Electrical Engineering, Technical University of Denmark, Kongens Lyngby, Denmark, 2Department of Health Technology, Technical University of Denmark, Kongens Lyngby, Denmark
1Department of Electrical Engineering, Technical University of Denmark, Kongens Lyngby, Denmark, 2Department of Health Technology, Technical University of Denmark, Kongens Lyngby, Denmark
A cryogenic coil for 13C human head
imaging is developed, showing 1.90-fold SNR improvement over a room-temperature
coil. Based on this coil design, a 4-channel cryogenic array is developed showing
1.54-fold SNR gain over a room-temperature array.
Fig. 3. SNR maps of 1-, 4-, and 28-channel coils at
cryogenic and room temperatures. The SNR has an arbitrary unit. The peak SNRs are
247 for 1-channel cryogenic coil, 130 and 296 for room-temperature coils separated
from the phantom by 22 mm and 2 mm; 417 and 270 for 4-channel
cryogenic and room-temperature arrays separated from the phantom by 13 mm;
265 for 28-channel array. The ratio of cryogenic SNR to room-temperature are
1.90 for the 1-channel coil and 1.54 for the 4-channel array.
Fig. 4. Cross-section SNR profiles of imaging
experiments. The SNR has an arbitrary unit. The SNR values are averaged between
two nearest pixels. The inset shows the positions of cross-sections.
